Electrical conduction in Ba(Bi0.5Nb0.5)O3 ceramics. Impedance spectroscopy analysis

• Autorzy: Prasad K. , Bhagat S. , Amarnath K. , Choudhary S. N. , Yadav K. L.
• Języki publikacji: EN

Abstrakty

EN

A new lead free perovskite ceramics Ba(Bi0.5Nb0.5)O3 was fabricated by a conventional ceramic technique at 1185 °C and subsequent sintering at 1200 °C in air atmosphere. The XRD analysis of Ba(Bi0.5Nb0.5)O3 powder indicated the formation of a single-phase monoclinic structure. The ac conductivity data were found to obey the power law and showed a negative temperature coefficient for the resistance behaviour. The ac conductivity values were used to evaluate the density of states at the Fermi level, minimum hopping length and activation energy of the compound. The correlated barrier hopping model was found to successfully explain the mechanism of charge transport in Ba(Bi0.5Nb0.5)O3.

Słowa kluczowe

EN

Ba(Bi0.5Nb0.5)O3; ceramics; ac conductivity; conduction mechanism; hopping model

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2010
• Tom: Vol. 28, No. 1
• Strony: 317--325
• Opis fizyczny: Bibliogr. 23 poz.

Twórcy

autor

Prasad K.

autor

Bhagat S.

autor

Amarnath K.

autor

Choudhary S. N.

autor

Yadav K. L.

• Materials Research Laboratory University Department of Physics T.M. Bhagalpur University Bhagalpur 812 007 India

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